I installed the iOS 4 SDK yesterday. I previously had the 3.1.2, 3.1.3 and 3.2 SDKs installed. Since installing the iOS 4 SDK, I only have 3.2 and 4.0 available in Xcode. When I
You needed to install XCode beta to an alternative folder /DeveloperBeta (for example) and use the stable xcode for older SDK builds.
You can still do that actually.